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Alarms

Top Articles

  1. Water Level Alarm 3lectrix
    This circuit will produce an audible alarm when the water level reaches a preset level.The circuit
  2. Power Supply Failure Alarm 3lectrix
    Most of the power supply failure indicator circuits need a separate power supply for themselves. Bu
  3. Modular Burglar Alarm ElectroMaster
    This circuit features automatic Exit and Entry delays and a timed Bell Cut-off. It has provision fo
  4. Alarm - With Infrared Remote cyb0rg777
    I built this circuit recently and decided to do a rough schematic and post it here.It is a car alar
  5. Water Activated Alarm ElectroMaster
    The circuit uses a 555 timer wired as an astable oscillator and powered by the emitter current of t
  6. 5 Zone Alarm System ElectroMaster
    Each zone uses a normally closed contact. These can be micro switches or standard alarm contacts (u
  7. Miniature Loop Alarm ElectroMaster
    A few months ago, I decided to build a compact, yet effective alarm. My demands were:- simple const
  1. 3lectrix

    Water Level Alarm

    This circuit will produce an audible alarm when the water level reaches a preset level.The circuit
    5/5, 1 vote
    Updated:
    Dec 29, 2011
  2. 3lectrix

    Power Supply Failure Alarm

    Most of the power supply failure indicator circuits need a separate power supply for themselves. Bu
    3/5, 2 votes
    Updated:
    Dec 29, 2011
  3. ElectroMaster

    Modular Burglar Alarm

    This circuit features automatic Exit and Entry delays and a timed Bell Cut-off. It has provision fo
    5/5, 1 vote
    Updated:
    Nov 7, 2011
  4. cyb0rg777

    Alarm - With Infrared Remote

    I built this circuit recently and decided to do a rough schematic and post it here.It is a car alar
    0/5, 0 votes
    Updated:
    Jun 16, 2011
  5. ElectroMaster

    Water Activated Alarm

    The circuit uses a 555 timer wired as an astable oscillator and powered by the emitter current of t
    4/5, 1 vote
    Updated:
    Sep 4, 2010
  6. ElectroMaster

    5 Zone Alarm System

    Each zone uses a normally closed contact. These can be micro switches or standard alarm contacts (u
    0/5, 0 votes
    Updated:
    Jul 6, 2010
  7. ElectroMaster

    Miniature Loop Alarm

    A few months ago, I decided to build a compact, yet effective alarm. My demands were:- simple const
    0/5, 0 votes
    Updated:
    Jul 5, 2010